ModsJava
Long NBT Killer Mod (1.21.8, 1.20.1) – Prevent Minecraft from Crashing
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
⬇ DownloadWhen Minecraft is encountering any compound / list nbt tag with a depth greater than 512, it throws an exception and refuses to load the save. Long NBT Killer Mod replaced the annoying mechanism with a harmless log warning, and let the game go ahead. A compound / list nbt tag with a depth greater than 512 itself is abnormal, and you may check your save via NBT editor after receiving the warning in the log.
Long NBT Killer Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.8, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 25643.mcaddon
- Download size: 4 KB
- Download link checked 22 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.